640795680

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:600

約数の個数: 288

約数和(自身を含む): 2521628928

約数和(自身を除く): 1880833248

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 151, 160, 168, 180, 210, 224, 240, 252, 280, 288, 302, 315, 336, 360, 420, 421, 453, 480, 504, 560, 604, 630, 672, 720, 755, 840, 842, 906, 1008, 1057, 1120, 1208, 1260, 1263, 1359, 1440, 1510, 1680, 1684, 1812, 2016, 2105, 2114, 2265, 2416, 2520, 2526, 2718, 2947, 3020, 3171, 3360, 3368, 3624, 3789, 4210, 4228, 4530, 4832, 5040, 5052, 5285, 5436, 5894, 6040, 6315, 6342, 6736, 6795, 7248, 7578, 8420, 8456, 8841, 9060, 9513, 10080, 10104, 10570, 10872, 11788, 12080, 12630, 12684, 13472, 13590, 14496, 14735, 15156, 15855, 16840, 16912, 17682, 18120, 18945, 19026, 20208, 21140, 21744, 23576, 24160, 25260, 25368, 26523, 27180, 29470, 30312, 31710, 33680, 33824, 35364, 36240, 37890, 38052, 40416, 42280, 43488, 44205, 47152, 47565, 50520, 50736, 53046, 54360, 58940, 60624, 63420, 63571, 67360, 70728, 72480, 75780, 76104, 84560, 88410, 94304, 95130, 101040, 101472, 106092, 108720, 117880, 121248, 126840, 127142, 132615, 141456, 151560, 152208, 169120, 176820, 190260, 190713, 202080, 212184, 217440, 235760, 253680, 254284, 265230, 282912, 303120, 304416, 317855, 353640, 380520, 381426, 424368, 444997, 471520, 507360, 508568, 530460, 572139, 606240, 635710, 707280, 761040, 762852, 848736, 889994, 953565, 1017136, 1060920, 1144278, 1271420, 1334991, 1414560, 1522080, 1525704, 1779988, 1907130, 2034272, 2121840, 2224985, 2288556, 2542840, 2669982, 2860695, 3051408, 3559976, 3814260, 4004973, 4243680, 4449970, 4577112, 5085680, 5339964, 5721390, 6102816, 6674955, 7119952, 7628520, 8009946, 8899940, 9154224, 10171360, 10679928, 11442780, 13349910, 14239904, 15257040, 16019892, 17799880, 18308448, 20024865, 21359856, 22885560, 26699820, 30514080, 32039784, 35599760, 40049730, 42719712, 45771120, 53399640, 64079568, 71199520, 80099460, 91542240, 106799280, 128159136, 160198920, 213598560, 320397840, 640795680]

約数ペア:

[(1, 640795680), (2, 320397840), (3, 213598560), (4, 160198920), (5, 128159136), (6, 106799280), (7, 91542240), (8, 80099460), (9, 71199520), (10, 64079568), (12, 53399640), (14, 45771120), (15, 42719712), (16, 40049730), (18, 35599760), (20, 32039784), (21, 30514080), (24, 26699820), (28, 22885560), (30, 21359856), (32, 20024865), (35, 18308448), (36, 17799880), (40, 16019892), (42, 15257040), (45, 14239904), (48, 13349910), (56, 11442780), (60, 10679928), (63, 10171360), (70, 9154224), (72, 8899940), (80, 8009946), (84, 7628520), (90, 7119952), (96, 6674955), (105, 6102816), (112, 5721390), (120, 5339964), (126, 5085680), (140, 4577112), (144, 4449970), (151, 4243680), (160, 4004973), (168, 3814260), (180, 3559976), (210, 3051408), (224, 2860695), (240, 2669982), (252, 2542840), (280, 2288556), (288, 2224985), (302, 2121840), (315, 2034272), (336, 1907130), (360, 1779988), (420, 1525704), (421, 1522080), (453, 1414560), (480, 1334991), (504, 1271420), (560, 1144278), (604, 1060920), (630, 1017136), (672, 953565), (720, 889994), (755, 848736), (840, 762852), (842, 761040), (906, 707280), (1008, 635710), (1057, 606240), (1120, 572139), (1208, 530460), (1260, 508568), (1263, 507360), (1359, 471520), (1440, 444997), (1510, 424368), (1680, 381426), (1684, 380520), (1812, 353640), (2016, 317855), (2105, 304416), (2114, 303120), (2265, 282912), (2416, 265230), (2520, 254284), (2526, 253680), (2718, 235760), (2947, 217440), (3020, 212184), (3171, 202080), (3360, 190713), (3368, 190260), (3624, 176820), (3789, 169120), (4210, 152208), (4228, 151560), (4530, 141456), (4832, 132615), (5040, 127142), (5052, 126840), (5285, 121248), (5436, 117880), (5894, 108720), (6040, 106092), (6315, 101472), (6342, 101040), (6736, 95130), (6795, 94304), (7248, 88410), (7578, 84560), (8420, 76104), (8456, 75780), (8841, 72480), (9060, 70728), (9513, 67360), (10080, 63571), (10104, 63420), (10570, 60624), (10872, 58940), (11788, 54360), (12080, 53046), (12630, 50736), (12684, 50520), (13472, 47565), (13590, 47152), (14496, 44205), (14735, 43488), (15156, 42280), (15855, 40416), (16840, 38052), (16912, 37890), (17682, 36240), (18120, 35364), (18945, 33824), (19026, 33680), (20208, 31710), (21140, 30312), (21744, 29470), (23576, 27180), (24160, 26523), (25260, 25368)]